on a 1996 Z28, anyone know the size and material for the two O-rings that are on the shaft on a Opti spark? This shaft is inserted into the end of the cam shaft. Thx all.

 

Parts stores usually have a bin full of different size o-rings. You could take them off and take them in and find ones that match in size.

 

Ok Thanks. See what I can find. Ken

 

Don't those orings come in the timing cover gasket kits? Rock Auto has them for $7. You'd probably be better off just buying the kit to get the orings and having spare gaskets.

​​Pretty sure those are the ones you need at the very bottom of the picture.

Chad

 

Good point. I can check that out. Thx

 

If you are swapping out the opti, you should replace the opti oil seal and water pump oil seal in the timing cover. If thats the case just get the timing cover seal kit.